[DRBD-user] Constant OOPses with drbd (0.7.6) module insert +linux 2.6 (+ SLOW synching)

Mixter mixter at gmail.com
Mon Jan 24 13:06:06 CET 2005

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


Well, I'm happy to report I think I solved the oopses, thanks to
Phillip Reisner's clue.
Now just still lost with the SLOW SLOW initial synchronisation between devices.

My solution against the OOPS was:
1) configure the kernels (exact same version) without SMP
2) compile each kernel on its own system
3) THEN, compile drbd modules again for that kernel

I take this was a mismatch between kernel and system, or between kernel
and the drbd module, or possibly, my setup didn't like SMP kernels as much.

But with regards to the SLOW initializing/synching problem, see below,
I still have
no clue or fix. A benchmark was attached previously, dma is on and
all, I'm happy
for any clues on known drbd issues or (non-lethal!) hdparm commands...

version: 0.7.6 (api:77/proto:74)
SVN Revision: 1663 build by root at primary, 2005-01-24 11:08:48
 0: cs:SyncTarget st:Secondary/Secondary ld:Inconsistent
    ns:0 nr:15936 dw:15936 dr:0 al:0 bm:130 lo:0 pe:0 ua:0 ap:0
        [>...................] sync'ed:  0.1% (122282/122298)M
        finish: 108:41:45 speed: 284 (240) K/sec
 1: cs:SyncTarget st:Secondary/Secondary ld:Inconsistent
    ns:0 nr:15720 dw:15720 dr:0 al:0 bm:128 lo:0 pe:0 ua:0 ap:0
        [>...................] sync'ed:  0.1% (120009/120024)M
        finish: 106:40:30 speed: 244 (240) K/sec

version: 0.7.6 (api:77/proto:74)
SVN Revision: 1663 build by root at secondary, 2005-01-24 11:08:24
 0: cs:SyncSource st:Secondary/Secondary ld:Consistent
    ns:16368 nr:0 dw:0 dr:16368 al:0 bm:3 lo:0 pe:0 ua:0 ap:0
        [>...................] sync'ed:  0.1% (122282/122298)M
        finish: 139:07:49 speed: 240 (240) K/sec
 1: cs:SyncSource st:Secondary/Secondary ld:Consistent
    ns:16152 nr:0 dw:0 dr:16176 al:0 bm:1 lo:0 pe:0 ua:6 ap:0
        [>...................] sync'ed:  0.1% (120008/120024)M
        finish: 102:24:27 speed: 272 (240) K/sec

/dev/hda:
 Timing buffered disk reads:    8 MB in  3.07 seconds =   2.60 MB/sec

/dev/hda:
 Timing buffer-cache reads:   492 MB in  2.01 seconds = 245.18 MB/sec



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